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EP1696591A3 - CATV uplink optical transmission system - Google Patents

CATV uplink optical transmission system Download PDF

Info

Publication number
EP1696591A3
EP1696591A3 EP06010219A EP06010219A EP1696591A3 EP 1696591 A3 EP1696591 A3 EP 1696591A3 EP 06010219 A EP06010219 A EP 06010219A EP 06010219 A EP06010219 A EP 06010219A EP 1696591 A3 EP1696591 A3 EP 1696591A3
Authority
EP
European Patent Office
Prior art keywords
signal
optical
section
reference current
received
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06010219A
Other languages
German (de)
French (fr)
Other versions
EP1696591A2 (en
Inventor
Kouichi c/o Matsushita Elec. Ind. Co. Ltd Masuda
Hiroyuki c/o Matsushita Elec. Ind. Co. Ltd Sasai
Shinichi c/o Matsushita Elec. Ind. Co. Ltd Kido
Hideyuki c/o Matsushita Elec. Ind. Co. Ltd Sogabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of EP1696591A2 publication Critical patent/EP1696591A2/en
Publication of EP1696591A3 publication Critical patent/EP1696591A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking
    • H04B10/272—Star-type networks or tree-type networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2537—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to scattering processes, e.g. Raman or Brillouin scattering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Optical Communication System (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

A CATV station apparatus (100) subjects received optical signals to processes of optical-electrical conversion, signal separation, coupling , and demodulation for obtaining an uplink signal. A received photocurrent monitoring section (170) compares a received photocurrent at a optical receiving section (110) with a predetermined reference current. If the received photocurrent is equal to or higher than the reference current, an amplifying section (130) amplifies a signal output from a signal separating section (120) at a predetermined level. If the received photocurrent is lower than the reference current, on the other hand, it is determined that a non-linear phenomenon, such as stimulated Brillouin scattering, has occurred in an optical fiber (200). The amplifying section (130) then outputs a signal at a level which does not affect, even after being coupled with other signals, communications performed by other optical transmission systems.
EP06010219A 2002-05-15 2003-05-14 CATV uplink optical transmission system Withdrawn EP1696591A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002139614 2002-05-15
EP03010789A EP1363416B1 (en) 2002-05-15 2003-05-14 CATV uplink optical transmission system

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP03010789.0 Division 2003-05-14
EP03010789A Division EP1363416B1 (en) 2002-05-15 2003-05-14 CATV uplink optical transmission system

Publications (2)

Publication Number Publication Date
EP1696591A2 EP1696591A2 (en) 2006-08-30
EP1696591A3 true EP1696591A3 (en) 2011-08-10

Family

ID=29267785

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06010219A Withdrawn EP1696591A3 (en) 2002-05-15 2003-05-14 CATV uplink optical transmission system
EP03010789A Expired - Lifetime EP1363416B1 (en) 2002-05-15 2003-05-14 CATV uplink optical transmission system

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03010789A Expired - Lifetime EP1363416B1 (en) 2002-05-15 2003-05-14 CATV uplink optical transmission system

Country Status (5)

Country Link
US (1) US7603693B2 (en)
EP (2) EP1696591A3 (en)
CN (1) CN100490358C (en)
DE (1) DE60306581T2 (en)
TW (1) TWI269313B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7389045B2 (en) * 2003-05-08 2008-06-17 Verizon Business Global Llc Apparatus and method for monitoring and compensating an optical signal
US9363469B2 (en) 2008-07-17 2016-06-07 Ppc Broadband, Inc. Passive-active terminal adapter and method having automatic return loss control
US9647851B2 (en) 2008-10-13 2017-05-09 Ppc Broadband, Inc. Ingress noise inhibiting network interface device and method for cable television networks
US8464301B2 (en) * 2008-10-16 2013-06-11 Ppc Broadband, Inc. Upstream bandwidth conditioning device between CATV distribution system and CATV user
US8385219B2 (en) * 2009-10-09 2013-02-26 John Mezzalingua Associates, Inc. Upstream bandwidth level measurement device
US20110085586A1 (en) * 2009-10-09 2011-04-14 John Mezzalingua Associates, Inc. Total bandwidth conditioning device
US8516537B2 (en) * 2009-10-09 2013-08-20 Ppc Broadband, Inc. Downstream bandwidth conditioning device
US8832767B2 (en) * 2008-10-16 2014-09-09 Ppc Broadband, Inc. Dynamically configurable frequency band selection device between CATV distribution system and CATV user
US8213457B2 (en) * 2009-10-09 2012-07-03 John Mezzalingua Associates, Inc. Upstream bandwidth conditioning device
US8510782B2 (en) 2008-10-21 2013-08-13 Ppc Broadband, Inc. CATV entry adapter and method for preventing interference with eMTA equipment from MoCA Signals
US11910052B2 (en) 2008-10-21 2024-02-20 Ppc Broadband, Inc. Entry device for communicating external network signals and in-home network signals
US8479247B2 (en) 2010-04-14 2013-07-02 Ppc Broadband, Inc. Upstream bandwidth conditioning device
US8561125B2 (en) 2010-08-30 2013-10-15 Ppc Broadband, Inc. Home network frequency conditioning device and method
US10021343B2 (en) 2010-12-21 2018-07-10 Ppc Broadband, Inc. Method and apparatus for reducing isolation in a home network
CN102156286B (en) * 2011-01-06 2013-01-23 南京理工大学 Brillouin scattering underwater laser imaging detector based on photonic crystal filter
US9509405B2 (en) * 2013-01-16 2016-11-29 Maxlinear, Inc. Multi-mode fiber node
US12273142B2 (en) * 2021-08-05 2025-04-08 Charter Communications Operating, Llc Power saving for multi-wavelength passive optical network (PON)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0598651A1 (en) * 1992-11-17 1994-05-25 Alcatel Cit Optical transmission system, particularly for a video communication cable network
US5598288A (en) * 1995-07-31 1997-01-28 Northrop Grumman Corporation RF fiber optic transmission utilizing dither
GB2316562A (en) * 1996-08-20 1998-02-25 Fujitsu Ltd Optical transmitter with feedback control to maintain a constant level of backward brillouin scattered light

Family Cites Families (20)

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IT1247845B (en) * 1991-03-29 1995-01-02 Pirelli Cavi Spa OPTICAL FIBER TELECOMMUNICATION LINE WITH PROTECTION DEVICE FOR OPTICAL AMPLIFIERS
US20050114906A1 (en) * 1993-05-03 2005-05-26 Ictv, Inc. System for interactive television
JP3316773B2 (en) 1994-01-07 2002-08-19 日本電信電話株式会社 Digital line switching system
US5528582A (en) * 1994-07-29 1996-06-18 At&T Corp. Network apparatus and method for providing two way broadband communications
JP3432620B2 (en) 1994-12-20 2003-08-04 富士通株式会社 Optical transmitter and laser diode module
AU704526B2 (en) * 1995-03-24 1999-04-29 British Telecommunications Public Limited Company Optical network
US5850400A (en) * 1995-04-27 1998-12-15 Next Level Communications System, method, and apparatus for bidirectional transport of digital data between a digital network and a plurality of devices
EP0762766A3 (en) 1995-09-12 1997-11-05 AT&T Corp. Network apparatus and method for providing two-way broadband communications
JPH09312618A (en) 1996-05-21 1997-12-02 Nippon Telegr & Teleph Corp <Ntt> Optical surge compatible optical receiver
US5963844A (en) * 1996-09-18 1999-10-05 At&T Corp. Hybrid fiber-coax system having at least one digital fiber node and increased upstream bandwidth
JPH10112689A (en) 1996-10-03 1998-04-28 Hitachi Cable Ltd Optical receiving circuit and optical receiver
US5949560A (en) 1997-02-05 1999-09-07 Northern Telecom Limited Optical transmission system
US6266168B1 (en) 1997-12-19 2001-07-24 Lucent Technologies Inc. Optical protection switch employing an interference filter
US6457178B1 (en) * 1998-03-17 2002-09-24 Scientific-Atlanta, Inc. Pulse width modulator for communication system including fiber optic communications
JPH11284999A (en) 1998-03-30 1999-10-15 Toshiba Corp Node device, center device, and CATV system using these devices
US6373611B1 (en) * 1998-06-22 2002-04-16 Scientific-Atlanta, Inc. Digital optical transmitter
JP2000236296A (en) 1999-02-12 2000-08-29 Oki Electric Ind Co Ltd Transmission power control circuit
US6523177B1 (en) * 1999-04-01 2003-02-18 Scientific-Atlanta, Inc. Cable television system with digital reverse path architecture
US6490727B1 (en) * 1999-10-07 2002-12-03 Harmonic, Inc. Distributed termination system for two-way hybrid networks
US7162732B2 (en) * 2001-03-27 2007-01-09 Intel Corporation System and related methods facilitating the detection and acquisition of a data channel in a cable modem

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0598651A1 (en) * 1992-11-17 1994-05-25 Alcatel Cit Optical transmission system, particularly for a video communication cable network
US5598288A (en) * 1995-07-31 1997-01-28 Northrop Grumman Corporation RF fiber optic transmission utilizing dither
GB2316562A (en) * 1996-08-20 1998-02-25 Fujitsu Ltd Optical transmitter with feedback control to maintain a constant level of backward brillouin scattered light

Also Published As

Publication number Publication date
CN1458753A (en) 2003-11-26
US20050262545A1 (en) 2005-11-24
US7603693B2 (en) 2009-10-13
EP1363416B1 (en) 2006-07-05
EP1363416A3 (en) 2005-02-02
TWI269313B (en) 2006-12-21
EP1363416A2 (en) 2003-11-19
EP1696591A2 (en) 2006-08-30
CN100490358C (en) 2009-05-20
DE60306581T2 (en) 2007-07-05
DE60306581D1 (en) 2006-08-17
TW200400521A (en) 2004-01-01

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